JPH109783A - Integral type heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an integral type heat exchanger having corrugated fins with easy processing of the fins without breakage of its material by suppressing an increase in a ventilating resistance. SOLUTION: In the integral type heat exchanger having a first heat exchange unit 21 and a second heat exchange unit 23 commonly having corrugated fins 37 for forming louvers 65 and coupled to one another, the fins 37 form parallel louvers 67 at parts disposed between the units 21 and 23. The louvers 67 are formed at the side of the unit 21 or 23 having a lower using temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a heat exchanger having a first heat exchanger and a second heat exchanger arranged in parallel, and connecting these heat exchangers to each other by sharing corrugated fins forming louvers. More particularly, the present invention relates to a structure of a corrugated fin for preventing heat interference between both heat exchangers.

[0002]

2. Description of the Related Art Conventionally, as this type of integrated heat exchanger, for example, Japanese Utility Model Laid-Open No. 2-14582,
One disclosed in Japanese Patent No. 177795 is known. FIGS. 5 and 6 show an integrated heat exchanger disclosed in Japanese Utility Model Laid-Open No. 2-14582. In the figures, reference numeral 1 denotes a first heat exchanger used as a radiator.

In front of the first heat exchanger 1, a second heat exchanger 3 used as a cooling condenser is arranged in parallel. This integrated heat exchanger is provided with upper and lower tanks (not shown). Each tank has a tube 5 of the first heat exchanger 1 made of aluminum and a tube 7 of the second heat exchanger 3 made of aluminum. Are opened respectively.

A corrugated fin 9 made of aluminum and having an ordinary louver 11 is integrally formed between the tube 5 of the first heat exchanger 1 and the tube 7 of the second heat exchanger 3. The connection portion 15 of the corrugated fin 9 located between the tube 5 of the first heat exchanger 1 and the tube 7 of the second heat exchanger 3 has a louver 13 for preventing heat conduction.
Are formed.

The louver 13 for preventing heat conduction and the normal louver 11 are formed in substantially the same shape. In this integrated heat exchanger, the refrigerant of the condenser circulates through the tube 7 of the second heat exchanger 3 and is efficiently cooled by air through the corrugated fins 9 while the first heat exchanger 1 The coolant of the radiator flows through the tube 5 of
The cooling liquid is efficiently cooled by the air through the corrugated fins 9.

In the integrated heat exchanger constructed as described above, the corrugated fins 9 arranged between the tube 5 of the first heat exchanger 1 and the tube 7 of the second heat exchanger 3 are provided. Since the corrugated fins 9 are integrally formed and the connecting portion 15 of the corrugated fin 9 located between the tube 5 of the first heat exchanger 1 and the tube 7 of the second heat exchanger 3 is formed with a louver 13 for preventing heat conduction. The heat conduction preventing louvers 13 effectively prevent heat conduction from the corrugated fins 9 located on the first heat exchanger 1 side to the corrugated fins 9 located on the second heat exchanger 3 side. .

That is, the corrugated fins 9 of this type of integrated heat exchanger are positively connected to each other by the function for interconnecting the first heat exchanger 1 and the second heat exchanger 3 and the connecting portion 15 thereof. It is used to increase the heat radiation area and to exhibit the function of actively dissipating heat.

FIG. 6 shows an integrated heat exchanger disclosed in Japanese Patent Application Laid-Open No. Hei 3-17795. This integrated heat exchanger differs in that the heat conduction preventing louver 13 in the integrated heat exchanger shown in FIGS. 5 and 6 is replaced by one or a plurality of notches 17. In the integrated heat exchanger of FIG. 7 as well, it is possible to prevent heat interference between the heat exchangers 1 and 3 as in the integrated heat exchangers shown in FIGS.

[0009]

However, in the integrated heat exchangers shown in FIGS. 5 and 6, both heat exchangers 1, 3 are used.
As means for preventing thermal interference between the heat exchangers 1 and 3, a louver 13 for preventing heat conduction having the same shape as the normal louver 11 is provided on the corrugated fin 9 located between the heat exchangers 1 and 3. The louver 11 provided in a portion having a small heat radiation capability (in the case of a radiator and a capacitor, on the capacitor side) may increase the airflow resistance and reduce the performance.

In the integrated heat exchanger shown in FIG. 7, a connecting portion 1 of a corrugated fin 5 located between the two heat exchangers 1 and 3 provided for increasing a heat radiation area.
5 cannot be used. Further, when the corrugated fin 9 is formed, the cutout 17 is provided, so that a broken material is generated and the cutter is clogged, which makes it difficult to process the fin.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a corrugated fin which suppresses an increase in airflow resistance, is easy to fin, and does not generate broken material. It is to provide an integrated heat exchanger.

[0012]

According to the first aspect of the present invention, there is provided the following:
In an integrated heat exchanger in which a heat exchanger and a second heat exchanger share a corrugated fin forming a louver and are connected to each other, the corrugated fin comprises a first heat exchanger and a second heat exchanger.
It is characterized in that a parallel louver is formed in a connecting portion located between the heat exchanger and the heat exchanger.

[0013] According to a second aspect of the present invention, in the integrated heat exchanger according to the first aspect, the parallel louver has a low operating temperature.
It is characterized by being formed on the heat exchanger or the second heat exchanger side.

(Function) According to the first aspect of the present invention, the corrugated fins extend from the first heat exchanger or the second heat exchanger having a high operating temperature to the second heat exchanger or the first heat exchanger having a low operating temperature. Is effectively exchanged with the air by the parallel louvers without having a thermal effect on the second heat exchanger or the first heat exchanger having a low operating temperature.

[0015] At this time, the wind flowing through both heat exchangers can flow in the ventilation direction without increasing the resistance by the parallel louvers. According to the second aspect of the present invention, since the parallel louvers are formed on the side of the first heat exchanger or the second heat exchanger having a low operating temperature, the heat propagated through the corrugated fins is effectively transmitted to the air by the parallel louvers. The first heat exchanger or the second heat exchanger, which is heat-exchanged and has a low operating temperature, does not affect the heat.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments. 1 to 4 show an embodiment of the integrated heat exchanger according to the first and second aspects of the present invention. In the drawings, reference numeral 21 denotes a first heat exchanger that constitutes a radiator; Reference numeral 23 denotes a second heat exchanger constituting the condenser. Here, the operating temperature of the first heat exchanger 21 is 85
℃, the operating temperature of the second heat exchanger 23 is about 60 ℃. Therefore, in the present embodiment, the first heat exchanger 21 will be described as a heat exchanger having a high use temperature.

The tanks 25 and 27 of the first heat exchanger 21 and the tanks 31 and 33 of the second heat exchanger 23 are made of aluminum and are integrally formed by extrusion. The tanks 25 and 27 of the first heat exchanger 21 have a box cross-sectional shape, and the tanks 31 and 33 of the second heat exchanger 23 have a round cross-sectional shape. The tanks 31 and 33 of the second heat exchanger 23 are in contact with the lower part of the flat part 39 formed on the side walls of the tanks 25 and 27 of the first heat exchanger 21 and are integrated via a connecting part 61. .

Tube insertion holes 49, 51 are formed in the bottom surfaces 41, 43 of the tanks 25, 27 of the first heat exchanger 21. The tube 2 is inserted into the tube insertion holes 49 and 51.
9 is inserted. The tube insertion holes 49 and 51 are formed perpendicular to the bottom surfaces 41 and 43 of the tanks 25 and 27 of the first heat exchanger 21. Tube insertion holes 5 are provided on bottom surfaces 45 and 47 of tanks 31 and 33 of second heat exchanger 23.
3, 55 are drilled. Tube insertion holes 53, 55
, A tube 35 is inserted. The tube insertion holes 53 and 55 are formed perpendicular to the bottom surfaces 45 and 47 of the tanks 31 and 33 of the second heat exchanger 23.

A normal louver 6 is provided between the tube 29 of the first heat exchanger 21 and the tube 35 of the second heat exchanger 23.
Corrugated fins 3 made of aluminum formed with 5
7 are integrally formed.
A parallel louver 67 is formed on the side of the second heat exchanger 23 of the connecting portion 63 located between the tube 29 of the first heat exchanger 21 and the tube 35 of the second heat exchanger.

The parallel louver 67 is a normal louver 65
Similarly, is formed on the flat portion 69 of the corrugated fin 37. The tanks 25 and 27 and the tube 29 of the first heat exchanger 21 and the tanks 31 and 33 of the second heat exchanger 23, the tube 35 and the fins 37 are integrally brazed according to a standard method.

According to the present embodiment configured as described above, heat that propagates from the first heat exchanger 21 having a high use temperature to the second heat exchanger 23 having a low use temperature via the corrugated fins 37. Is effectively exchanged with the air by the parallel louvers 67 and does not affect the second heat exchanger 23 having a low operating temperature. At that time, the wind flowing through the tubes 29 and 35 of the heat exchangers 21 and 23 is
It is possible to flow in the ventilation direction without increasing the resistance by the parallel louvers 67.

As described above, according to the present embodiment, a parallel louver is provided on the side of the second heat exchanger 23 having a low operating temperature as a means for preventing heat interference between the two heat exchangers 21 and 23 having different operating temperatures. Therefore, it is possible to suppress an increase in airflow resistance as compared with a conventional ordinary louver, and to prevent performance degradation. Since the parallel louver 67 can be processed at the same time as the normal louver 65, fin processing is easy and there is no generation of broken material.

Also, since the connecting portion 63 other than the portion where the parallel louver 67 is provided is not provided with a louver,
It functions as a heat radiating portion, and can sufficiently exhibit the function as an integrated heat exchanger to increase the heat radiating area. In the above embodiment, the parallel louvers 67 are provided near the second heat exchanger 23 having a low operating temperature. However, the first heat exchanger 21 having a high operating temperature and the second heat exchanger 2 having a low operating temperature are provided.
If it is between 3, the radiator for preventing heat conduction and one or more cutouts can exhibit excellent heat dissipation performance.

In the above embodiment, the first heat exchanger 21
Tanks 25 and 27 and the tank 31 of the second heat exchanger 23,
Although the case where 33 is made of aluminum and formed integrally by extrusion has been described, it may be provided separately, or one provided with a partition in one tank.

[0025]

As described above, according to the first and second aspects of the present invention, it is possible to suppress the increase in the ventilation resistance by the louver while maintaining the increase in the heat radiation area by the connecting portion between the two heat exchangers. It becomes possible.

Further, since processing can be performed in the same manner as a normal louver, it is possible to perform louver processing without generation of broken material.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of an integrated heat exchanger according to the first and second aspects.

FIG. 2 is a plan view of the corrugated fin of FIG.

FIG. 3 is a sectional view of the corrugated fin of FIG. 1;

FIG. 4 is a perspective view of the corrugated fin of FIG. 1;

FIG. 5 is a plan view showing a conventional integrated heat exchanger.

FIG. 6 is a cross-sectional view of the corrugated fin of FIG.

FIG. 7 is a plan view showing a conventional integrated heat exchanger.

[Explanation of symbols]

 Reference Signs List 21 first heat exchanger 23 second heat exchanger 25, 27, 31, 33 tank 29, 35 tube 37 corrugated fin 63 connecting part 65 louver 67 parallel louver

Claims (2)

[Claims] 1. An integrated heat exchanger in which a first heat exchanger (21) and a second heat exchanger (23) share a corrugated fin (37) forming a louver (65) and are mutually connected. In the exchanger, the corrugated fin (37) is provided with a connecting portion (6) located between the first heat exchanger (21) and the second heat exchanger (23).
An integrated heat exchanger, wherein a parallel louver (67) is formed in 3). 2. The integrated heat exchanger according to claim 1, wherein the parallel louver (67) is formed on the side of the first heat exchanger (21) or the second heat exchanger (23) having a lower operating temperature. Integrated heat exchanger.